Overview
- Federal data show March 2026 was the most abnormally hot month ever recorded in the Lower 48, with an average of 10.47°C (50.85°F) that ran 5.19°C above the 20th‑century norm.
- The heat smashed daily records across the country, with more than 19,800 high‑temperature marks and 10 states logging their hottest March on record.
- Drought coverage neared 60% of the contiguous U.S., as March ranked eighth driest and the January–March span set a national record for dryness.
- NCEI’s global outlook puts the odds of 2026 finishing as a top‑10 warm year above 99.9%, with a 2.9% chance it ends up the warmest on record.
- Peer‑reviewed research links marine heat waves to faster‑strengthening tropical cyclones that yield about 60% more billion‑dollar landfall disasters, heightening risk as parched soils boost fire danger and strain water supplies.